Animal-shears.



PATENTE'D DEC. 24, 1907. T. A. MARTIN.-

ANIMAL SHEARS. APPLICATION FILED JUNE 15. 1007.v

2 SHEETSBHEET l.

- No 874,52 PATENTED DEC. 24, 1907.

T. A, MARTIN.

ANIMAL SHEARS. APPLICATION FILED JUNE15, 1907.

2 SHEETS-SHEET 2.

animal shears, on an enlarged scale.

the forward portion of the shears.

- UNITE STATES THOMAS'ARTHUR MARTIN, CHICAGO, ILLINOIS, ASSIGNOR TO DAVIS-MARTIN 4 OF CHICAGO, ILLINOIS, 'A CORPORATION OF ILLINOIS.

PATENT OFFICE.

COMPANY,

ANIMAL-SHEARB.

' No. 874,522. Specification of Letters Patent. Patented Dec. 24., 1907.

1 Application filed June 15i1907- Serial No. 879.108.

To all whom it may concern:

Be it known that I, THOMAS ARTHUR MAR- TIN, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Animal-Shears, of which the following is a specification.

One of the objects of this invention is the production of an animal'shears having an im roved means for adjusting the cutters. This object I accomplish by providing means for moving the stationary cutting element or com toward or away from the movable cutting element.

Another object is to provide an improved bearing for the movable cutting. element.

The'mvention alsorelates to the other lin proiements in animal shears hereinafter set ort In the accompanying drawings, Figure 1 is a sideelevation of an animal shears embodying the features of my invention. Fig; 2 is a top plan view of the forward portion F'of said .ig. 3 1s a longitudinal vertical central section-through Fi 4-is an underside view of the forward end of -the device. Fig. 5 is a perspective view of the movable cutting element and the member that connects it with the actuating lever.

6 is a perspective view showing the nu? derfside of the movable cutting element;

The presentembodiment of the invention belongs to the class of animal shears in which the'cutter is driven from a motor separatefrom the shears, as distinguished from the forward end to t c cutter-mechanism andtype of animalshe ars which comprises a mo- However, it will be appar-'- tor'within itself. cut that certain features of the invention are'applicab'le to animal shears of any form drive.

1 indicates a casing of convenient size and form to be held in the hand of the operator. In said casing is rotat'ably mounted a drive shaft 2 (Fig. 3) o eratively connected at its geared or otherwise suitably connected at means of which power is communicated to the shears from any suitable source. A

shield 4 of leather or other suitable material is providedto partially Tinclose the gear con nection between the'shaft 2 and the member 3. In theup'per and lower flwall's near the open forward end of the casing 1 are formed two aliued screw-threaded openings 5 and 6.

. screws 7 and 8, respectively. The screw 8 has a bearing opening 9 therein adapted to. receive the lower end of the pivot .pin 10 for the member that supports the movable cuttin element. The bearing screw 7 has a soclret 11 therein for the reception of the upper end of said pivot pin. 12 Ban open- .ing in the up er'end of th bearing screw"? throu h whic lubricant may be introduced into tie socket 11. The lowerend of the ivot pin 10 is slightly reduced in diameter, orining a shoulder 13; Upon the up er portion of the pivot pin is formed an an at an e or collar 14.

T 1e lever 15 for the niovable cutter has an opening 16 therein through which the pivot Preferably the pin 10 is movement. The rear end of the lever is operatively connected with the drive shaft 2 in any suitable way, as by pivotally mounting a pin 17 in the bifurcated rear end of said lever, the free end of said pin lying loosely Within a tapered opening 18 in a disk 19 fixed to the forward end of said shaft. The forward end of the cutter lever 15 is in the form-of a finger 20 upon which is mounted a holder 2-1 (Fig. 5) having an elongated opeiiin" 22 therein through which 'said finger extends. The portion'23 of said holder lies across the u iger side of thelinger 20, and in front of a shou er 24 upon said linger. The portion 25 ofthe holder passes under said finger and 'lies be-' hind the shoulder 36 thereon. Said shoulders prevent any considerablemoveinent of the holder 21 longitudinally of the finger 20, but allow a little play. The finger 20 passes 'tio'u just described between the finger 20 and the holder 21 allows-the parts to accommo date themselves to the )ressure placed {upon them in operation. T p prises wings 27 lung one at each side of the finger 20, each 0 said wings-having a downwardl .extending stud 2-8 fixed thereto. The

sists, in this instance, of a sheet metal stamping having two openings 30 therein though which the pins 28 extend. The cutting element 29 comprises three blades 31 each prol/Vithin these openings are located bearing log, t e collar 14 limiting its downward freely through the opening 22. The conneche holder 21 com-' I mova le cutting element 29 (Fig. 6) convided with two shearing edges 32. The for ward ends of the Wings 27 and the finger'20 bear upon said blades and hold the same to their wor The stationary cutting element or comb 33 is carried upon the forward end of a lever 34 pivotally' mounted upon a pin 35, said in extending through ears 36 upon the un er side of the casing 1. The comb 33 is adjustably secured to the under side of the forward endof the lever 34 b means of screws 37, said screws extending t rough notches 38 formed in the rear end of the comb. An opening 39 is formed in the lever 34 to a'flord access to the bearing screw 8. The lever 34; extends rearwardly of its pivot 35 to a point near the rear end of the casing 1, and is there provided with an adjusting screw 40 adapted to bear u on the adjacent portion of said casing. Ii} means of the screw 40 the lever 34 may be tilted to hold the'comb 33 in operative relation with the cutting'element 29. As the cutters Wear the screvi 40 is adjusted to hold said cutting elements together with the degree of pressurenecessary to permit of proper shearing action. The p1 vot 35 for the ever .34. is so far removed from the operating portion of the comb 33 that the adjusting movement of said comb is substantially a rectilinear movement toward and away from the cutting element 29. An opening 41 is formed in the u per wall of the casing 1 near the forward en thereof to give access to the mechanism in said casing and to permit of en plying lubricant thereto. This opening is ept covered during the operation ofthe machine by a ca 42. Said. cap is held in place by means 0 a flange 43 thereon fitting over the forward end of the casing 1, and by a screw 44.

In operation,'tl1e-rotation of the disk 19 causes the lever 15' and the cutting element 29 to be oscillated. The comb 33 is adjusted to provide proper contact between the cutting elements by means of the screw 40. The comb-adjusting means holds the comb positively and unyieldingly against the cutting element 29. When it is desirable to sharpen the cutter 29 thev comb 33 is removed from the lever 3d, whereupon the cutter 29 drops out of the machine.

W'bile I have described in some detail a s eci'fic embodiment of my invention which I com to benew' and advantageous in the details of construction, I do not desire to be understood as limiting myself in respect to the broaderieatures of my invention to the specificconstruction shown and described.

I claim as my invention:

1. In an animal shears, in combination, a supportingni'cmber; a movable cutter; a lever pivoted to said supporting :memlmr; a stationary cutter carried bysaid. lever; and means for adjusting the position of saidlevcr.

2. In an animal shears, in combination, a

cutting member carried at the lever pivoted to said supporting member at a point between its ends; a cutting element carried at one end of said lever;and an adjusting means carried at the other end of said lever.

3. In an animal shears, in combination, a supporting member; a movable cutter; a lever pivoted to said supporting member at a point between the ends of said lever; a cutter carried at one end of said lever; and an adjusting screw mounted in the other end of said lever.

4. In an animal shears, in combination, a casing adapted to be held in the hand of the operator; a movable cutter; means in said casing for moving said movable cutter; a lever pivoted at a point between its ends near the forward end of said casing, one end of said lever extending to a point near the rearend of said casing; an adjusting screw in said end of said lever adapted to bear upon an ad j acent portion of the casing; and a stationary other end of said lever. i

5. In an animal shears, in combination, a

- supporting member; a lever pivotally mounted therein; means for pivotally moving said lever, said lever comprising a forwardly-em tending finger; a member mounted upon-said finger; a cutting element attached to said last mentioned member; a stationary cutting element; and means for pressing said sta* tionary cutting member against said first mentioned cutting element.

6. In an animal shears, in combinatiom'a supporting member; a lever pivotally mounted in said supporting member; means for pivotally moving said lever, said "lever comprising afinger having shoulders thereon; a member mounted upon said finger between said shoulders; a cutting element attached to said its last mentioned member; a stationar cutting element and means for pressing sai stationary cutting element against said first n1entioned cutting element. j

7. In an animal shears,.in combination, a supporting member; a lever pivotally mounted therein; means'for pivotallv moving said lever, said lever comprising a er; a mem ber mounted on said finger, said member comprising two Wings havingpins fixed thereto; a cutting member having openings thcrein into which said pins extend; a stationary cutting member; and means for prcssin 1 said stationary cutting member against sair first mentioned cutting member. I 8. In an animal shears, in combination, a supporting member; a lever pivotally mounted in said supporting member; means" for pivotally moving said lever, said lever comprising a finger having shoulders thereon; a member fitting over said finger between said shoulders, said member com ing at opposite sides of said nger, said wings rising wingslysupporting member; a, lever pivoteliy mountmovin said iever.

supporting member; a lever pivotaily mountedin said supporting member and eompns mg a finger-having shoulders thereon; a meme having pins fined thereto; having openings therein into which said pins extend, said Wings and said finger bearing upon said cutting member; a stetionary cutting member; and means for pressing said netting member against said first mentioned. cuttingmember.

9 In an a-iiimei a cutting member i shears, in combination, s

ed therein, said lever comprising a forwardly extending finger; a membermount ed upon said finger; a cutting eiement 'atteohed to said last mentioned member; a stationery cutting element; and means for pivoteiiy shears, in combination, 8x1

10. nsan animal I oer mounted on said finger shoulders; a cutting element attached to saidinst-mentioned member; a stationary cutting element, and means forpivoteily moving sai lever.

11. In an animal shears, in combination, a

- supporting member; a lever pivotally mounted therein and comprising a finger; a memend comprising two Wings having ins fixed thereto; a, cutin member hav n openings therein in which said pins extend; a stationary cutting member; and means for pivot'slly moving said lever.

THOMAS Witnesses:

C. PAUL PARKER, GEORGE L. CHINDAHL.

earners MARTIN. 

